WO2012014677A1 - 血圧測定装置 - Google Patents
血圧測定装置 Download PDFInfo
- Publication number
- WO2012014677A1 WO2012014677A1 PCT/JP2011/065966 JP2011065966W WO2012014677A1 WO 2012014677 A1 WO2012014677 A1 WO 2012014677A1 JP 2011065966 W JP2011065966 W JP 2011065966W WO 2012014677 A1 WO2012014677 A1 WO 2012014677A1
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- WIPO (PCT)
- Prior art keywords
- measurement
- pressure
- air bag
- blood pressure
- compression
- Prior art date
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-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/02141—Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers using the oscillometric method
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/132—Tourniquets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02233—Occluders specially adapted therefor
Definitions
- the present invention relates to a blood pressure measurement device, and more particularly, to a blood pressure measurement device that automatically wraps a measurement air bag around a measurement site and compresses the blood pressure during measurement.
- the measurement air bag is preliminarily pressurized in order to wrap the measurement air bag around the measurement site with appropriate strength at the start of measurement.
- the measurement air bag is included in the measurement cuff, and the cuff further includes, for example, a compression air bag which is an example of a means for pressing the measurement air bag. Then, the blood pressure is measured based on the change in pressure in the measurement air bag.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-305028 discloses the preliminary pressurization as described above.
- the rate of increase of the pressure air bag is detected while increasing the pressure of the pressure air bag.
- the measurement air bag winding process ends.
- the measurement of blood pressure based on the change in pressure in the measurement air bag is disclosed in, for example, Japanese Patent Application Laid-Open No. 62-268532.
- the threshold value (Th_SBP, It is calculated as a pressure value at which a pressure pulse wave having an amplitude of (Th_DBP) is generated.
- Amp Max is the maximum pressure pulse wave amplitude value
- ⁇ SBP , ⁇ SBP , ⁇ DBP , and ⁇ DBP are constants obtained experimentally.
- Th_SBP Amp Max ⁇ ⁇ SBP + ⁇ SBP
- Th_DBP Amp Max ⁇ ⁇ DBP + ⁇ DBP
- the air in the measurement air bag is discharged at the end of the measurement. If the discharge is not performed satisfactorily for some reason, the air in the measurement air bag at the start of the measurement. It is assumed that the remaining amount is different.
- the introduction of air into the measurement air bag is controlled by the driving time of the pressurization mechanism. From this, if the remaining amount of air in the measurement air bag at the start of measurement is different, the amount of air introduced into the measurement air bag in the preliminary pressurization varies, and as a result It is assumed that there is a variation in the cuff winding strength after pressing.
- the pressure pulse wave used for blood pressure calculation detects a change in the volume of the measurement air bag caused by a change in the volume of the artery that occurs during pressurization or decompression of the measurement site as a pressure change.
- the amount of air pressure in the measurement air bag changes due to variations in the amount of air in the measurement air bag during pre-pressurization and variations in winding strength, so the magnitude of the pressure pulse wave detected as a result changes.
- the blood pressure values vary.
- the present invention has been conceived in view of the actual situation, and an object of the present invention is to suppress variation in cuff winding strength at the start of measurement in a blood pressure measurement device.
- a blood pressure measurement device includes a measurement air bag wound around a measurement site, a compression unit for compressing the measurement air bag from the outside of the measurement air bag toward the measurement site, and a measurement A pressurizing unit for pressurizing the inside of the air bladder, a decompressing unit for decompressing the inside of the measuring air bag, and a blood pressure determining unit for determining blood pressure in a pressurizing step by the pressurizing unit or a decompressing step by the decompressing unit; And a control unit that applies a pressure equal to or higher than the atmospheric pressure to the measurement air bag when the internal pressure of the measurement air bag becomes equal to or lower than a specific pressure due to the decompression by the decompression unit.
- FIG. 1 It is a perspective view which shows the specific example of the external appearance of the blood-pressure measuring apparatus (blood pressure meter) concerning one embodiment of this invention. It is a cross-sectional schematic diagram at the time of blood pressure measurement of the sphygmomanometer of FIG. It is sectional drawing for demonstrating the internal structure of the measurement part of the blood pressure meter of FIG. It is a block diagram which shows the specific example of a function structure of the blood pressure meter of FIG. It is a flowchart of the blood-pressure measurement process performed in the sphygmomanometer of FIG. It is a figure which shows an example of the change of the internal pressure of the air bag for a measurement, and the air bag for compression fixation in the blood-pressure measurement process of FIG.
- FIG. 1 is a perspective view showing a specific example of the appearance of a blood pressure measurement device (hereinafter referred to as a sphygmomanometer) 1 according to an embodiment of the present invention.
- a sphygmomanometer a blood pressure measurement device
- a sphygmomanometer 1 mainly includes a main body 2 placed on a desk or the like, and a measurement unit 5 for inserting an upper arm that is a measurement site of a measurer.
- a measurement unit 5 for inserting an upper arm that is a measurement site of a measurer.
- the measuring unit 5 is attached to the main body 2 at a variable angle, and includes a housing 6 that is a substantially cylindrical machine frame and a living body compression fixing device that is housed in an inner peripheral portion of the housing 6.
- the living body compression fixing device housed in the inner peripheral portion of the housing 6 in the normal use state is not exposed and is covered with the cover 7.
- FIG. 2 is a schematic cross-sectional view of the sphygmomanometer 1 during blood pressure measurement.
- the upper arm 100 is inserted into the housing 6 and the elbow is placed on the elbow rest to instruct the start of measurement.
- the upper arm 100 is compressed and fixed by the living body compression fixing device, and the blood pressure is measured.
- the living body pressure fixing device corresponds to a cuff, is a measurement air bag 13 for measuring blood pressure by compressing a measurement site, and a substantially cylindrical shape that is positioned outside the measurement air bag 13 and can expand and contract in the radial direction.
- the curler 10 is a flexible member, and is positioned on the outside of the curler 10, and expands to press the outer peripheral surface of the curler 10 inward to reduce the diameter of the curler 10.
- a compression fixing air bag 8 which is a measurement air bag compression means for pressing the air bag 13 against the measurement site of the living body.
- FIG. 3 is a cross-sectional view for explaining the internal structure of the measurement unit 5.
- compression fixing air bladder 8 is provided inside housing 6 and is inflated / reduced by a compression fixing air system 30 (see FIG. 4) described later.
- a curler 10 made of a plate-like member wound in a substantially cylindrical shape is disposed inside the compression-fixing air bag 8.
- the curler 10 is a thin plate-like plate body made of a flexible material such as plastic, and elastically deforms in the radial direction when an external force is applied.
- the measurement air bladder 13 is arranged inside the curler 10 and is inflated / reduced by a measurement air system 20 (see FIG. 4) described later.
- the curler 10 is wound around the measurement air bag 13 so that a part of the curler 10 overlaps in the winding direction.
- FIG. 4 is a block diagram illustrating a specific example of a functional configuration of the sphygmomanometer 1.
- sphygmomanometer 1 includes measurement air bag 13 and compression / fixation air bag 8, and further includes measurement air system 20 connected to measurement air bag 13, and compression / fixation.
- a compression fixing air system 30 connected to the air bag 8 is included.
- the measurement air system 20 includes a pressure sensor 23 that measures the internal pressure of the measurement air bladder 13, a pump 21 that supplies and exhausts air to the measurement air bladder 13, and a valve 22.
- the compression / fixation air system 30 includes a pressure sensor 33 that measures the internal pressure of the compression / fixation air bladder 8, a pump 31 that supplies and exhausts air to / from the compression / fixation air bladder 8, and a valve 32.
- the sphygmomanometer 1 includes a CPU (Central Processing Unit) 40 that controls the entire sphygmomanometer 1, an amplifier 28 connected to the measurement air system 20, a pump drive circuit 26, a valve drive circuit 27, and a pressure fixing unit. An amplifier 38, a pump drive circuit 36 and a valve drive circuit 37 connected to the air bladder 8, A / D (Analog to Digital) converters 29 and 39 connected to the amplifiers 28 and 38, and a CPU 40, respectively. A memory 41 for storing programs and measurement results, a display unit 4 for displaying measurement results and the like, an operation unit 3 including measurement switches and power switches, and the power supplied from an external power source to each unit of the sphygmomanometer 1 Power supply 44 to be supplied. The power supply 44 may supply power to each part of the sphygmomanometer 1 without receiving power supply from an external power supply such as a rechargeable battery.
- the power supply 44 may supply power to each part of the sphygmomanometer 1 without receiving power supply from an external power
- the CPU 40 executes a predetermined program stored in the memory 41 based on the operation signal input from the operation unit 3 and outputs a control signal to the pump drive circuits 26 and 36 and the valve drive circuits 27 and 37. Part 40B.
- the pump drive circuits 26 and 36 and the valve drive circuits 27 and 37 drive the pumps 21 and 31 and the valves 22 and 32 according to the control signal to execute a blood pressure measurement operation.
- the pressure sensor 23 detects the internal pressure of the measurement bladder 13 and inputs a detection signal to the amplifier 28.
- the pressure sensor 33 corresponds to a compression degree detection means, detects the internal pressure of the pressure fixing air bag 8 corresponding to the degree of compression of the measurement air bag by the measurement air bag compression means, and inputs a detection signal to the amplifier 38. To do.
- the input pressure signals are amplified to predetermined amplitudes by the amplifiers 28 and 38, converted into digital signals by the A / D converters 29 and 39, and then input to the CPU 40.
- the CPU 40 executes a predetermined process based on the internal pressures of the measurement air bladder 13 and the pressure fixing air bladder 8 obtained from the pressure sensors 23 and 33, and the pump drive circuits 26 and 36 and the valve drive according to the result.
- the control signals are output to the circuits 27 and 37.
- the CPU 40 includes a blood pressure value calculation unit 40A that calculates a blood pressure value (maximum blood pressure value, minimum blood pressure value, and / or average blood pressure value) based on the internal pressure of the measurement air bladder 13 obtained from the pressure sensor 23. Including. Then, the CPU 40 outputs the blood pressure value calculated by the blood pressure value calculation unit 40A to the display unit 4 in order to display it on the display unit 4 as a measurement result.
- a blood pressure value maximum blood pressure value, minimum blood pressure value, and / or average blood pressure value
- the operation unit 3 includes a power switch 3A for switching on / off the power supply of the sphygmomanometer 1, a measurement switch 3B for causing the sphygmomanometer 1 to start blood pressure measurement, and for forcibly stopping the measurement being performed.
- a stop switch 3C and a user selection switch 3D for selecting a user of the sphygmomanometer 1 are included.
- CPU40 performs control corresponding to each switch, when each switch of the operation part 3 is operated.
- FIG. 5 is a flowchart of a process (blood pressure measurement process) executed when measuring the blood pressure of the measurer in the sphygmomanometer 1.
- CPU 40 initializes blood pressure monitor 1 in step SA1.
- the CPU 40 performs a process of winding the cuff around the measurement site.
- the CPU 40 introduces a predetermined amount of air into the measurement air bladder 13 and increases the pressure of the pressure fixing air bladder 8. Then, the rate of increase in pressure of the compression-fixing air bladder 8 is detected, and when the predetermined pressure increase rate is detected with respect to the start of the increase, the pressure increase in the compression-fixing air bag 8 is stopped. Thereby, the cuff is wound around the measurement site.
- step SA2 pressurization of the measurement air bladder 13 is started, and the process proceeds to step SA3.
- step SA3 the CPU 40 determines whether or not the internal pressure of the measurement air bladder 13 has reached a specific pressure. If it is determined that it has been reached, the process proceeds to step SA4.
- the specific pressure is a pressure that is sufficiently higher (about 20 to 30 mmHg) than the maximum blood pressure of the measurer, and may be, for example, a value stored in the memory 41 in advance. It may be calculated based on the systolic blood pressure value that is simply detected in the process of increasing the internal pressure of the air bladder 13 for measurement, or the measurement of the past systolic blood pressure value stored in the memory 41 for the measurer currently being measured. It may be calculated based on the result.
- the measurement result of the past blood pressure value is stored for each measurer in the memory 41, and the CPU 40 accepts the input of information specifying the measurer in step SA1, whereby the CPU 40 stores the past measurer's past.
- the measured value of the blood pressure value can be read out.
- step SA4 the CPU 40 starts depressurization of the measurement air bladder 13, and advances the process to step SA5.
- the decompression of the measurement air bladder 13 is realized by opening the valve 22.
- a pump for decompressing the measurement air bladder 13 may be provided separately, and the measurement air bladder 13 may be decompressed by driving the pump.
- the CPU 40 adjusts the internal pressure of the pressure fixing air bladder 8 to match the internal pressure of the measurement air bladder 13 when the internal pressure of the measurement air bladder 13 is reduced. Specifically, it is adjusted so that it is higher than the internal pressure of the measurement air bladder 13 and has a certain pressure difference with respect to the internal pressure of the measurement air bladder 13. An example of changes in the internal pressure of the measurement air bladder 13 and the pressure fixing air bladder 8 is shown in FIG.
- the horizontal axis indicates the measurement time
- the vertical axis indicates the internal pressure of the measurement air bladder 13 and the compression fixing air bladder 8.
- the internal pressure of the measurement air bladder 13 is indicated by a solid line (line L1)
- the internal pressure of the compression fixing air bladder 8 is indicated by a broken line (line L2).
- the measurement air bladder 13 When the measurement air bladder 13 is pressurized from the start of measurement and reaches a specific pressure (pressure Pm in FIG. 6), the measurement air bladder 13 is decompressed.
- the internal pressure of the pressure fixing air bladder 8 When the pressure reduction of the measurement air bladder 13 is started, the internal pressure of the pressure fixing air bladder 8 is controlled so that the difference between the internal pressure of the measurement air bladder 13 and the internal pressure of the measurement air bladder 13 becomes a certain value.
- This control is realized, for example, by adjusting the opening amount of the valve 32 based on the detected value of the internal pressure of the measurement air bladder 13.
- the difference between the internal pressure of the pressure fixing air bladder 8 and the internal pressure of the measurement air bladder 13 is a certain value from the measurement time Tm when the internal pressure of the measurement air bladder 13 reaches Pm to the measurement time T1. Maintained.
- the CPU 40 extracts a vibration component accompanying a change in the volume of the artery superimposed on the internal pressure of the measurement air bladder 13 during the decompression of the measurement air bladder 13, and calculates a blood pressure value by a known calculation process (step SA7).
- step SA5 the CPU 40 determines whether or not the internal pressure of the measurement air bladder 13 has reached a predetermined pressure (P1) in parallel with the calculation of the blood pressure value. If it is determined that it has been reached, the process proceeds to step SA6.
- P1 a predetermined pressure
- step SA6 the internal pressure of the compression-fixing air bladder 8 is adjusted so that the difference between the internal pressure of the measurement air bladder 13 and the internal pressure of the compression-fixing air bag 8 becomes a certain value or more.
- the internal pressure of the compression-fixing air bag 8 is adjusted in order to suppress the discharge of air in the compression-fixing air bag 8 by, for example, closing the valve 32 or reducing the opening amount of the valve 32. This is realized by the control.
- the control By controlling in this way, in FIG. 6, after the measurement time T1 when the internal pressure of the measurement air bladder 13 is reduced to P1, the internal pressure difference between the measurement air bladder 13 and the compression fixing air bladder 8 is changed from Tm to T1. It is larger than the internal pressure difference.
- this internal pressure difference is a pressure at which the compression-fixing air bladder 8 can overcome the frictional force of the overlapping portion of the curler 10 and apply a pressure higher than the atmospheric pressure to the measurement air bladder 13.
- step SA7 when the blood pressure measurement (step SA7) and the adjustment of the internal pressure of the compression-fixing air bag 8 (step SA6) are being performed in parallel, the CPU 40 determines that the blood pressure measurement has been completed. (YES in step SA8), the process proceeds to step SA9.
- step SA9 the CPU 40 keeps the internal pressure difference between the measurement air bladder 13 and the compression-fixing air bladder 8 at a certain value or more in order to complete the exhaust of the measurement air bladder 13.
- the valve 22 is opened for a predetermined time or more, and the process proceeds to Step SA10.
- step SA10 the CPU 40 exhausts the compression-fixing air bladder 8 (continues the state in which the valve 32 is opened for a specified time or more), and advances the process to step SA11.
- step SA11 the CPU 40 causes the display unit 4 to display the measured blood pressure value and ends the blood pressure measurement process.
- the state in which the internal pressure difference between the measurement air bladder 13 and the pressure fixing air bladder 8 is equal to or greater than a certain value is continued for a certain period of time.
- the discharge of air in the air bag 13 is promoted. Thereby, the air in the measurement air bladder 13 is surely discharged when the blood pressure measurement is completed.
- the internal pressure of the measurement air bladder 13 is detected, and on the condition that the detected value is P1, the pressure fixing air bladder 8 that causes the internal pressure difference to become a certain value or more.
- Control of the internal pressure is started.
- an elapsed time from the start of measurement or from the start of pressure reduction of the measurement air bladder 13 (step SA4) such that the internal pressure of the measurement air bladder 13 is equal to or lower than P1 is assumed in advance.
- the control of the internal pressure of the compression-fixing air bag 8 may be started so that the internal pressure difference becomes a certain value or more.
- the assumption of the elapsed time is, for example, the current blood pressure measurement value of the current measurer (stored in the memory 41), or the blood pressure value of the measurer temporarily detected in the pressurization step (step SA2) (minimum) This can be realized based on the blood pressure value, the average blood pressure value, and / or the maximum blood pressure value) and the speed of decompression of the measurement air bladder 13 (step SA4).
- the curler 10 is provided between the measurement air bag 13 and the pressure fixing air bag 8.
- the curler 10 is provided to make the measurement air bag 13 even in the circumferential direction of the measurement site, but may not be an essential component in the sphygmomanometer 1.
- FIG. 7 shows a flowchart of blood pressure measurement processing executed in the sphygmomanometer 1 not provided with the curler 10.
- CPU 40 initializes sphygmomanometer 1 in step ST1, as in step SA1.
- step ST1 when the measurement switch 3B is operated (step ST1), the CPU 40 performs a process of winding the cuff around the measurement site as in step SA1.
- step ST2 similarly to step SA2, the CPU 40 starts pressurization of the measurement air bladder 13, and proceeds to step ST3.
- step ST3 the CPU 40 determines whether or not the internal pressure of the measurement air bladder 13 has reached a specific pressure, as in step SA3. If it is determined that it has been reached, the process proceeds to step ST4.
- step ST4 the CPU 40 starts depressurization of the measurement air bladder 13 as in step SA4, and advances the process to step ST5.
- the CPU 40 adjusts the internal pressure of the pressure fixing air bladder 8 to match the internal pressure of the measurement air bladder 13 when reducing the internal pressure of the measurement air bladder 13 in step ST4. Specifically, the internal pressure is adjusted so as to be the same as the internal pressure of the measurement air bladder 13. An example of changes in the internal pressure of the measurement air bladder 13 and the compression-fixing air bladder 8 is shown in FIG.
- the horizontal axis indicates the measurement time
- the vertical axis indicates the internal pressure of the measurement air bladder 13 and the compression fixing air bladder 8.
- the internal pressure of the measurement air bladder 13 is indicated by a solid line (line L3)
- the internal pressure of the compression-fixing air bladder 8 is indicated by a broken line (line L4).
- the measurement air bladder 13 When the measurement air bladder 13 is pressurized from the start of measurement and reaches a specific pressure (pressure Pm in FIG. 8), the measurement air bladder 13 is decompressed.
- the internal pressure of the compression-fixing air bladder 8 is controlled so that the internal pressure of the measurement air bladder 13 becomes the same value.
- This control is realized, for example, by adjusting the opening amount of the valve 32 based on the detected value of the internal pressure of the measurement air bladder 13.
- the internal pressure of the pressure fixing air bladder 8 and the internal pressure of the measurement air bladder 13 are maintained at the same value from the measurement time Tm when the internal pressure of the measurement air bladder 13 reaches Pm to the measurement time T2.
- the CPU 40 extracts a vibration component accompanying an arterial volume change superimposed on the internal pressure of the measurement air bladder 13 during the decompression of the measurement air bladder 13, and calculates a blood pressure value by a known calculation process (step ST5).
- step ST6 the CPU 40 determines whether or not the calculation of the blood pressure value (minimum blood pressure value, average blood pressure value, and / or maximum blood pressure value) has been completed. If it is determined that the calculation has been completed, the process proceeds to step ST7. Proceed.
- the blood pressure value minimum blood pressure value, average blood pressure value, and / or maximum blood pressure value
- step ST7 the internal pressure of the compression-fixing air bladder 8 is adjusted so that the difference between the internal pressure of the measurement air bladder 13 and the internal pressure of the compression-fixing air bag 8 becomes a certain value or more.
- the internal pressure of the compression-fixing air bag 8 is adjusted in order to suppress the discharge of air in the compression-fixing air bag 8 by, for example, closing the valve 32 or reducing the opening amount of the valve 32. This is realized by the control.
- the valve 22 is opened.
- this internal pressure difference is a pressure at which the compression-fixing air bladder 8 can apply a pressure equal to or higher than the atmospheric pressure to the measurement air bladder 13.
- the decrease amount per unit time of the pressure of the measurement air bag 13 after T2 is larger than the decrease amount per unit time within the period from Tm to T2. Yes.
- step ST8 the CPU 40 maintains the relationship between the internal pressure differences between the measurement air bladder 13 and the compression-fixing air bladder 8 at a predetermined value or more until a predetermined time has elapsed after the processing of step ST7 is started.
- the internal pressure of the pressure fixing air bag 8 is controlled, and the process proceeds to step ST9.
- the CPU 40 may advance the process to step ST9 on the condition that a certain period of time has elapsed since the internal pressure of the measurement air bladder 13 became equal to or less than a certain value.
- step ST9 the CPU 40 exhausts the compression-fixing air bladder 8 (continues the state in which the valve 32 is opened for a specified time or more), and advances the process to step ST10.
- step ST10 the CPU 40 displays the measured blood pressure value on the display unit 4 and ends the blood pressure measurement process.
- exhaust of the measurement air bladder 13 may be promoted by connecting the pressure reduction pump to the measurement air bladder 13 and driving the pressure reduction pump.
- exhaust of the measurement air bladder 13 is promoted by compressing the measurement air bladder 13 by the compression fixing air bladder 8.
- exhaust of the measurement air bladder 13 may be promoted by a mechanism that is tightened with a wire or the like in order to press the measurement air bladder 13 against the measurement site instead of the compression-fixing air bladder 8.
- FIG. 1 A block diagram of a modified example of such a sphygmomanometer 1 is shown in FIG. Moreover, the typical cross section of the measurement site
- the sphygmomanometer 1 is provided with a compression fixing winding mechanism 81 including the wire 81A described above, instead of the compression fixing air bladder 8.
- One end side of the compression fixing winding mechanism 81 is fixed to the measurement air bladder 13.
- the other end side of the compression fixing winding mechanism 81 is housed in a winding device including a motor 82.
- the motor 82 rotates in the forward direction, the measurement air bag 13 is measured by winding the wire 81A by the compression fixing winding mechanism 81 along the direction indicated by the white arrow in FIG. Wound around the site.
- the sphygmomanometer 1 of the present modification is provided with a motor drive circuit 83 for driving the motor 82.
- the motor drive circuit 83 is controlled by the CPU 40.
- FIG. 11 shows a flowchart of blood pressure measurement processing executed in the sphygmomanometer 1 of the present modification.
- step SB1 when power switch 3A is operated, CPU 40 initializes sphygmomanometer 1 in step SB1.
- the CPU 40 performs a process of winding the cuff around the measurement site.
- the cuff is wound around the measurement site by winding the wire 81A by the compression fixing winding mechanism 81.
- step SB2 pressurization of the measurement air bladder 13 is started, and the process proceeds to step SB3.
- step SB3 the CPU 40 determines whether or not the internal pressure of the measurement air bladder 13 has reached a specific pressure, as in step SA3 and the like. If it is determined that it has been reached, the process proceeds to step SB4.
- step SB4 the CPU 40 starts depressurization of the measurement air bladder 13, and proceeds to step SB5.
- the decompression of the measurement air bladder 13 is realized by opening the valve 22.
- the CPU 40 extracts a vibration component accompanying a change in the volume of the artery superimposed on the internal pressure of the measurement air bladder 13 during the decompression of the measurement air bladder 13, and calculates a blood pressure value by a known calculation process (step SB5).
- step SB6 the CPU 40 determines whether or not the calculation of the blood pressure value (maximum blood pressure value, minimum blood pressure value, and / or average blood pressure value) has been completed, and if it is determined that the calculation has been completed, the process proceeds to step SB7. Proceed.
- the blood pressure value maximum blood pressure value, minimum blood pressure value, and / or average blood pressure value
- Step SB7 the CPU 40 causes the wire 81A to tighten the measurement air bladder 13 so as to be compressed with a force equal to or higher than the atmospheric pressure. Specifically, the motor 82 is driven to operate the wire 81A in this way. And CPU40 will advance a process to step SB8, if fixed time passes after the process of step SB7 is started. Note that the CPU 40 may advance the process to step SB8 on the condition that a certain period of time has elapsed since the internal pressure of the measurement air bladder 13 became equal to or less than a certain value.
- step SB8 the CPU 40 exhausts the measurement air bladder 13 (continues the state in which the valve 22 is opened for a specified time or more), and advances the process to step SB10.
- step SB10 the CPU 40 causes the display unit 4 to display the measured blood pressure value and ends the blood pressure measurement process.
- the pressure in the measurement air bag when the pressure in the measurement air bag is exhausted, by applying a pressure higher than the atmospheric pressure from the compression means, the discharge of the air in the measurement air bag can be promoted and the measurement is started. The variation in the remaining amount of air in the measurement air bag can be suppressed.
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Abstract
Description
Th_DBP=AmpMax×αDBP+βDBP …(2)
図1は、本発明の一実施の形態にかかる血圧測定装置(以下、血圧計)1の外観の具体例を示す斜視図である。
図2は、血圧測定時の血圧計1の断面概略図である。図2を参照して、血圧測定の際には、ハウジング6の内部に上腕100を差込んで上記肘置きに肘を載置して、測定開始を指示する。上腕100は上記生体圧迫固定装置によって圧迫固定され、血圧が測定される。
図3は、測定部5の内部構造を説明するための断面図である。図3を参照して、測定部5においては、ハウジング6の内側に圧迫固定用空気袋8が備えられ、後述する圧迫固定用エア系30(図4参照)によって膨張/縮小する。
図4は、血圧計1の機能構成の具体例を示すブロック図である。
図5は、血圧計1において測定者の血圧を測定する際に実行される処理(血圧測定処理)のフローチャートである。
以上説明した血圧測定処理では、測定用空気袋13の内圧がP1まで減圧されたことを起点として、上記内圧差が一定の値以上となるように圧迫固定用空気袋8の内圧が制御されている。
上記した実施の形態では、測定用空気袋13と圧迫固定用空気袋8の間にカーラ10が設けられていた。なお、カーラ10は、測定用空気袋13を測定部位の周方向に均等にさせる等のために設けられるものであるが、血圧計1において必須の構成要素ではない場合もある。
以上説明した実施の形態では、圧迫固定用空気袋8に接続された弁32の開放量を小さくしたり閉状態とすることにより測定用空気袋13の排気を促進したが、測定時間T1(図6)以降または測定時間T2(図8)以降、圧迫固定用空気袋8をさらに加圧して、測定用空気袋13の排気を促進しても良い。
以上説明した実施の形態では、測定用空気袋13の排気を、圧迫固定用空気袋8によって測定用空気袋13を圧迫することによって、促進していた。
Claims (6)
- 測定部位に巻き付ける測定用空気袋(13)と、
前記測定用空気袋(13)の外側から測定部位に向けて前記測定用空気袋(13)を圧迫するための圧迫部(8,30)と、
前記測定用空気袋(13)内を加圧するための加圧部(21)と、
前記測定用空気袋(13)内を減圧するための減圧部(22)と、
前記加圧部(21)による加圧工程または前記減圧部(22)による減圧工程において血圧を決定する血圧決定部と、
前記減圧部(22)による減圧により前記測定用空気袋(13)の内圧が特定の圧力以下となったときに、前記圧迫部(8,30)に、前記測定用空気袋(13)に対して大気圧以上の圧力を印加させる制御部(40)とを備えた、血圧測定装置(1)。 - 前記圧迫部(8,30)は、前記測定用空気袋(13)の外側に位置する圧迫用空気袋(8)を含み、
前記制御部(40)は、前記圧迫用空気袋(8)の内圧を制御することにより、前記圧迫用空気袋(8)に、前記測定用空気袋(13)に対して大気圧以上の圧力を印加する、請求項1に記載の血圧測定装置(1)。 - 前記制御部(40)は、前記測定用空気袋(13)と前記圧迫用空気袋(8)の内圧差に基づいて、前記圧迫部(8,30)による前記測定用空気袋(13)の圧迫態様を制御する、請求項1または請求項2に記載の血圧測定装置(1)。
- 前記測定用空気袋(13)の外側に巻き付けられた可撓部材(10)をさらに備え、
前記可撓部材(10)は、その一部を互いに接するように重ねられて、前記測定用空気袋(13)の外側に巻きつけられ、
前記制御部(40)は、前記圧迫部(8,30)に、前記可撓部材(10)に対して、前記測定用空気袋(13)を圧迫するように、大気圧と前記可撓部材(10)同士が接する部分の摩擦力との和以上の圧力を印加させる、請求項1または請求項2に記載の血圧測定装置(1)。 - 前記圧迫部(8,30)は、前記測定用空気袋(13)の外側に巻き付けられる巻き付け部材(81A)と、前記巻き付け部材を巻取ることにより当該巻き付け部材(81A)によって前記測定用空気袋(13)を圧迫する巻取り機構(81)とを含む、請求項1または請求項2に記載の血圧測定装置(1)。
- 前記制御部(40)は、前記減圧部(22)による減圧の開始から所定の時間が経過したことを条件として、前記圧迫部(8,30)に、前記測定用空気袋(13)に対して大気圧以上の圧力を印加させる、請求項1または請求項2に記載の血圧測定装置(1)。
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US9986919B2 (en) * | 2011-06-21 | 2018-06-05 | Masimo Corporation | Patient monitoring system |
US9532722B2 (en) | 2011-06-21 | 2017-01-03 | Masimo Corporation | Patient monitoring system |
JP6171261B2 (ja) * | 2012-02-14 | 2017-08-02 | 大日本印刷株式会社 | 光学積層体、偏光板及び画像表示装置 |
US20140378781A1 (en) | 2013-06-25 | 2014-12-25 | Qardio, Inc. | Methods and systems for acquiring diagnostic information |
US20170238825A9 (en) | 2013-06-25 | 2017-08-24 | Qardio, Inc. | Devices and methods for measuring blood pressure |
WO2015020911A2 (en) | 2013-08-05 | 2015-02-12 | Cercacor Laboratories, Inc. | Blood pressure monitor with valve-chamber assembly |
US20160120445A1 (en) | 2014-11-05 | 2016-05-05 | Qardio, Inc. | Devices, systems and methods for contextualized recording of biometric measurements |
JP6658332B2 (ja) * | 2016-06-23 | 2020-03-04 | オムロンヘルスケア株式会社 | 血圧計 |
JP6747332B2 (ja) * | 2017-02-16 | 2020-08-26 | オムロンヘルスケア株式会社 | 血圧情報測定装置 |
JP6894730B2 (ja) * | 2017-03-16 | 2021-06-30 | 日本光電工業株式会社 | 循環動態測定装置、循環動態測定方法、および循環動態測定プログラム |
US20210290089A1 (en) * | 2018-07-16 | 2021-09-23 | Tripie s.r.l. | Wearable blood pressure measurement and antihemorrhagic device |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0331404U (ja) * | 1989-08-02 | 1991-03-27 | ||
JPH03117969U (ja) * | 1990-03-16 | 1991-12-05 | ||
JPH0614889A (ja) * | 1992-07-03 | 1994-01-25 | Omron Corp | 血圧測定用カフ自動巻付装置 |
WO2007066461A1 (ja) * | 2005-12-05 | 2007-06-14 | Omron Healthcare Co., Ltd. | 精度よく血圧を測定できる血圧測定装置 |
JP2010075562A (ja) * | 2008-09-26 | 2010-04-08 | Terumo Corp | 電子血圧計及びその制御方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62268532A (ja) | 1986-05-16 | 1987-11-21 | オムロン株式会社 | 電子血圧計 |
JPS6472727A (en) * | 1987-09-14 | 1989-03-17 | Terumo Corp | Automatic hemomanometer |
JP3232779B2 (ja) * | 1993-05-31 | 2001-11-26 | 松下電器産業株式会社 | 電子血圧計 |
JP3815487B2 (ja) | 2004-04-26 | 2006-08-30 | オムロンヘルスケア株式会社 | 血圧測定用帯の巻付け制御装置 |
JP3117969U (ja) | 2005-10-25 | 2006-01-19 | テルモ株式会社 | 血圧計 |
JP4470876B2 (ja) * | 2005-12-20 | 2010-06-02 | オムロンヘルスケア株式会社 | 電子血圧計 |
JP5043707B2 (ja) * | 2008-02-12 | 2012-10-10 | テルモ株式会社 | 血圧測定装置およびその制御方法 |
JP5151690B2 (ja) * | 2008-05-27 | 2013-02-27 | オムロンヘルスケア株式会社 | 血圧情報測定装置および指標取得方法 |
JP5223566B2 (ja) * | 2008-09-26 | 2013-06-26 | オムロンヘルスケア株式会社 | 血圧情報測定装置 |
-
2010
- 2010-07-28 JP JP2010169171A patent/JP5640527B2/ja active Active
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2011
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- 2013-01-28 US US13/751,246 patent/US9642540B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0331404U (ja) * | 1989-08-02 | 1991-03-27 | ||
JPH03117969U (ja) * | 1990-03-16 | 1991-12-05 | ||
JPH0614889A (ja) * | 1992-07-03 | 1994-01-25 | Omron Corp | 血圧測定用カフ自動巻付装置 |
WO2007066461A1 (ja) * | 2005-12-05 | 2007-06-14 | Omron Healthcare Co., Ltd. | 精度よく血圧を測定できる血圧測定装置 |
JP2010075562A (ja) * | 2008-09-26 | 2010-04-08 | Terumo Corp | 電子血圧計及びその制御方法 |
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